There is a point of temperature and pressure where all three states can co-exist, this is call the Triple Point... so it is possible to have ice, water, and steam at the same time...Sorry, but God as H2O doesn't work for me. When the water boils, the ice melts. When the ice melts, you've got water, but not steam. If all three persons of your Trinity are present at the same time, the H2O analogy doesn't hold water.